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Postgres FD Implementation
Commit 3b34e982 authored by Bruce Momjian's avatar Bruce Momjian
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Modify libpq environment variable documentation to point to the relevant 

connection options documentation section, per idea from Magnus.
parent 2f90d9ff
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doc/src/sgml/libpq.sgml
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<!-- $PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.274 2008/12/15 10:28:21 mha Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.275 2009/01/10 20:14:30 momjian Exp $ -->
<chapter id="libpq">
<title><application>libpq</application> - C Library</title>
......@@ -101,7 +101,7 @@
The currently recognized parameter key words are:
<variablelist>
<varlistentry>
<varlistentry id="libpq-connect-host" xreflabel="host">
<term><literal>host</literal></term>
<listitem>
<para>
......@@ -119,7 +119,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-hostaddr" xreflabel="hostaddr">
<term><literal>hostaddr</literal></term>
<listitem>
<para>
......@@ -160,7 +160,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-port" xreflabel="port">
<term><literal>port</literal></term>
<listitem>
<para>
......@@ -171,7 +171,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-dbname" xreflabel="dbname">
<term><literal>dbname</literal></term>
<listitem>
<para>
......@@ -180,7 +180,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-user" xreflabel="user">
<term><literal>user</literal></term>
<listitem>
<para>
......@@ -191,7 +191,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-password" xreflabel="password">
<term><literal>password</literal></term>
<listitem>
<para>
......@@ -200,7 +200,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-connect-timeout" xreflabel="connect_timeout">
<term><literal>connect_timeout</literal></term>
<listitem>
<para>
......@@ -211,16 +211,20 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-options" xreflabel="options">
<term><literal>options</literal></term>
<listitem>
<para>
Command-line options to be sent to the server.
Adds command-line options to send to the server at run-time.
For example, setting this to <literal>-c geqo=off</> sets the
session's value of the <varname>geqo</> parameter to
<literal>off</>. For a detailed discussion of the available
options, consult <xref linkend="runtime-config">.
</para>
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-tty" xreflabel="tty">
<term><literal>tty</literal></term>
<listitem>
<para>
......@@ -229,7 +233,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-sslmode" xreflabel="sslmode">
<term><literal>sslmode</literal></term>
<listitem>
<para>
......@@ -259,7 +263,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-sslverify" xreflabel="sslverify">
<term><literal>sslverify</literal></term>
<listitem>
<para>
......@@ -295,7 +299,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-requiressl" xreflabel="requiressl">
<term><literal>requiressl</literal></term>
<listitem>
<para>
......@@ -317,7 +321,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-sslcert" xreflabel="sslcert">
<term><literal>sslcert</literal></term>
<listitem>
<para>
......@@ -327,7 +331,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-sslkey" xreflabel="sslkey">
<term><literal>sslkey</literal></term>
<listitem>
<para>
......@@ -342,7 +346,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-sslrootcert" xreflabel="sslrootcert">
<term><literal>sslrootcert</literal></term>
<listitem>
<para>
......@@ -351,7 +355,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-sslcrl" xreflabel="sslcrl">
<term><literal>sslcrl</literal></term>
<listitem>
<para>
......@@ -361,7 +365,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-krbsrvname" xreflabel="krbsrvname">
<term><literal>krbsrvname</literal></term>
<listitem>
<para>
......@@ -374,7 +378,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-gsslib" xreflabel="gsslib">
<term><literal>gsslib</literal></term>
<listitem>
<para>
......@@ -385,7 +389,7 @@
</listitem>
</varlistentry>
<varlistentry>
<varlistentry id="libpq-connect-service" xreflabel="service">
<term><literal>service</literal></term>
<listitem>
<para>
......@@ -5627,11 +5631,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGHOST</envar></primary>
</indexterm>
<envar>PGHOST</envar> sets the database server name.
If this begins with a slash, it specifies Unix-domain communication
rather than TCP/IP communication; the value is then the name of the
directory in which the socket file is stored (in a default installation
setup this would be <filename>/tmp</filename>).
<envar>PGHOST</envar> behaves the same as <xref
linkend="libpq-connect-host"> connection parameter.
</para>
</listitem>
......@@ -5640,17 +5641,10 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGHOSTADDR</envar></primary>
</indexterm>
<envar>PGHOSTADDR</envar> specifies the numeric IP address of the database
server. This can be set instead of or in addition to <envar>PGHOST</envar>
to avoid DNS lookup overhead. See the documentation of
these parameters, under <function>PQconnectdb</function> above, for details
on their interaction.
</para>
<para>
When neither <envar>PGHOST</envar> nor <envar>PGHOSTADDR</envar> is set,
the default behavior is to connect using a local Unix-domain socket; or on
machines without Unix-domain sockets, <application>libpq</application> will
attempt to connect to <literal>localhost</>.
<envar>PGHOSTADDR</envar> behaves the same as <xref
linkend="libpq-connect-hostaddr"> connection parameter.
This can be set instead of or in addition to <envar>PGHOST</envar>
to avoid DNS lookup overhead.
</para>
</listitem>
......@@ -5659,9 +5653,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGPORT</envar></primary>
</indexterm>
<envar>PGPORT</envar> sets the TCP port number or Unix-domain socket
file extension for communicating with the
<productname>PostgreSQL</productname> server.
<envar>PGPORT</envar> behaves the same as <xref
linkend="libpq-connect-port"> connection parameter.
</para>
</listitem>
......@@ -5670,8 +5663,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGDATABASE</envar></primary>
</indexterm>
<envar>PGDATABASE</envar> sets the
<productname>PostgreSQL</productname> database name.
<envar>PGDATABASE</envar> behaves the same as <xref
linkend="libpq-connect-dbname"> connection parameter.
</para>
</listitem>
......@@ -5680,7 +5673,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGUSER</envar></primary>
</indexterm>
<envar>PGUSER</envar> sets the user name used to connect to the
<envar>PGUSER</envar> behaves the same as <xref
linkend="libpq-connect-user"> connection parameter.
database.
</para>
</listitem>
......@@ -5690,8 +5684,9 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGPASSWORD</envar></primary>
</indexterm>
<envar>PGPASSWORD</envar> sets the password used if the server
demands password authentication. Use of this environment variable
<envar>PGPASSWORD</envar> behaves the same as <xref
linkend="libpq-connect-password"> connection parameter.
Use of this environment variable
is not recommended for security reasons (some operating systems
allow non-root users to see process environment variables via
<application>ps</>); instead consider using the
......@@ -5715,10 +5710,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGSERVICE</envar></primary>
</indexterm>
<envar>PGSERVICE</envar>
sets the service name to be looked up in
<filename>pg_service.conf</filename>. This offers a shorthand way
of setting all the parameters.
<envar>PGSERVICE</envar> behaves the same as <xref
linkend="libpq-connect-service"> connection parameter.
</para>
</listitem>
......@@ -5743,12 +5736,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGOPTIONS</envar></primary>
</indexterm>
<envar>PGOPTIONS</envar> sets additional run-time options for the
<productname>PostgreSQL</productname> server. For example, setting
<envar>PGOPTIONS</envar> to <literal>-c geqo=off</> sets the session's
value of the <varname>geqo</> parameter to <literal>off</>.
For a detailed discussion of the available options consult <xref
linkend="runtime-config">.
<envar>PGOPTIONS</envar> behaves the same as <xref
linkend="libpq-connect-options"> connection parameter.
</para>
</listitem>
......@@ -5757,20 +5746,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGSSLMODE</envar></primary>
</indexterm>
<envar>PGSSLMODE</envar> determines whether and with what priority
an <acronym>SSL</> connection will be negotiated with the server.
There are four modes: <literal>disable</> will attempt only an
unencrypted <acronym>SSL</> connection; <literal>allow</> will
negotiate, trying first a non-<acronym>SSL</> connection, then if
that fails, trying an <acronym>SSL</> connection; <literal>prefer</>
(the default) will negotiate, trying first an <acronym>SSL</>
connection, then if that fails, trying a regular non-<acronym>SSL</>
connection; <literal>require</> will try only an <acronym>SSL</>
connection. If <productname>PostgreSQL</> is compiled without SSL
support, using option <literal>require</> will cause an error, while
options <literal>allow</> and <literal>prefer</> will be accepted
but <application>libpq</> will not in fact attempt an <acronym>SSL</>
connection.
<envar>PGSSLMODE</envar> behaves the same as <xref
linkend="libpq-connect-sslmode"> connection parameter.
</para>
</listitem>
......@@ -5779,14 +5756,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGSSLVERIFY</envar></primary>
</indexterm>
<envar>PGSSLVERIFY</envar> controls how libpq verifies the certificate on the
server when performing an <acronym>SSL</> connection. There are
three options: <literal>none</> disables verification completely
(not recommended!); <literal>cert</> enables verification that
the certificate chains to a known CA only; <literal>cn</> will
both verify that the certificate chains to a known CA and that
the <literal>cn</> attribute of the certificate matches the
hostname the connection is being made to (default).
<envar>PGSSLVERIFY</envar> behaves the same as <xref
linkend="libpq-connect-sslverify"> connection parameter.
</para>
</listitem>
......@@ -5795,13 +5766,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGREQUIRESSL</envar></primary>
</indexterm>
<envar>PGREQUIRESSL</envar> sets whether or not the connection must
be made over <acronym>SSL</acronym>. If set to <quote>1</quote>,
<application>libpq</> will refuse to connect if the server does not
accept an <acronym>SSL</acronym> connection (equivalent to
<literal>sslmode</> <literal>prefer</>). This option is deprecated
in favor of the <literal>sslmode</> setting, and is only available
if <productname>PostgreSQL</> is compiled with SSL support.
<envar>PGREQUIRESSL</envar> behaves the same as <xref
linkend="libpq-connect-requiressl"> connection parameter.
</para>
</listitem>
......@@ -5810,8 +5776,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGSSLCERT</envar></primary>
</indexterm>
<envar>PGSSLCERT</envar> specifies the location for the client
certificate to use if the server requests one.
<envar>PGSSLCERT</envar> behaves the same as <xref
linkend="libpq-connect-sslcert"> connection parameter.
</para>
</listitem>
......@@ -5820,13 +5786,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGSSLKEY</envar></primary>
</indexterm>
<envar>PGSSLKEY</envar> specifies the location for the secret key
used for the client certificate. It can either specify a filename
that will be used instead of the default
<filename>~/.postgresql/postgresql.key</>, or can specify an external
engine (engines are <productname>OpenSSL</> loadable modules). The
external engine specification should consist of a colon-separated
engine name and an engine-specific key identifier.
<envar>PGSSLKEY</envar> behaves the same as <xref
linkend="libpq-connect-sslkey"> connection parameter.
</para>
</listitem>
......@@ -5835,8 +5796,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGSSLROOTCERT</envar></primary>
</indexterm>
<envar>PGSSLROOTCERT</envar> specifies the file name where the SSL
root certificate is stored.
<envar>PGSSLROOTCERT</envar> behaves the same as <xref
linkend="libpq-connect-sslrootcert"> connection parameter.
</para>
</listitem>
......@@ -5845,8 +5806,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGSSLCRL</envar></primary>
</indexterm>
<envar>PGSSLCRL</envar> specifies the file name where the SSL certificate
revocation list is stored.
<envar>PGSSLCRL</envar> behaves the same as <xref
linkend="libpq-connect-sslcrl"> connection parameter.
</para>
</listitem>
......@@ -5855,8 +5816,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGKRBSRVNAME</envar></primary>
</indexterm>
<envar>PGKRBSRVNAME</envar> sets the Kerberos service name to use
when authenticating with Kerberos 5 or GSSAPI.
<envar>PGKRBSRVNAME</envar> behaves the same as <xref
linkend="libpq-connect-krbsrvname"> connection parameter.
</para>
</listitem>
......@@ -5865,8 +5826,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGGSSLIB</envar></primary>
</indexterm>
<envar>PGGSSLIB</envar> sets the GSS library to use for GSSAPI
authentication.
<envar>PGGSSLIB</envar> behaves the same as <xref
linkend="libpq-connect-gsslib"> connection parameter.
</para>
</listitem>
......@@ -5875,12 +5836,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
<indexterm>
<primary><envar>PGCONNECT_TIMEOUT</envar></primary>
</indexterm>
<envar>PGCONNECT_TIMEOUT</envar> sets the maximum number of seconds
that <application>libpq</application> will wait when attempting to
connect to the <productname>PostgreSQL</productname> server. If
unset or set to zero, <application>libpq</application> will wait
indefinitely. It is not recommended to set the timeout to less than
2 seconds.
<envar>PGCONNECT_TIMEOUT</envar> behaves the same as <xref
linkend="libpq-connect-connect-timeout"> connection parameter.
</para>
</listitem>
</itemizedlist>
......
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